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PERIODIC SYSTEMS WITH TIME DEPENDENT MAXIMAL MONOTONE OPERATORS
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作者 Zhenhai LIU Nikolaos S.PAPAGEORGIOU 《Acta Mathematica Scientia》 SCIE CSCD 2024年第4期1280-1300,共21页
We consider a first order periodic system in R^(N),involving a time dependent maximal monotone operator which need not have a full domain and a multivalued perturbation.We prove the existence theorems for both the con... We consider a first order periodic system in R^(N),involving a time dependent maximal monotone operator which need not have a full domain and a multivalued perturbation.We prove the existence theorems for both the convex and nonconvex problems.We also show the existence of extremal periodic solutions and provide a strong relaxation theorem.Finally,we provide an application to nonlinear periodic control systems. 展开更多
关键词 periodic boundary condition time-dependent maximal monotone operator convex and nonconvex problems extremal solutions strong relaxation
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Iterative convergence theorems for maximal monotone operators and relatively nonexpansive mappings 被引量:5
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作者 WEI Li SU Yong-fu ZHOU Hai-yun 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2008年第3期319-325,共7页
In this paper, some iterative schemes for approximating the common element of the set of zero points of maximal monotone operators and the set of fixed points of relatively nonexpansive mappings in a real uniformly sm... In this paper, some iterative schemes for approximating the common element of the set of zero points of maximal monotone operators and the set of fixed points of relatively nonexpansive mappings in a real uniformly smooth and uniformly convex Banach space are proposed. Some strong convergence theorems are obtained, to extend the previous work. 展开更多
关键词 maximal monotone operator relatively nonexpansive mapping strong convergence zero point fixed point
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AN ITERATIVE ALGORITHM FOR MAXIMAL MONOTONE MULTIVALUED OPERATOR EQUATIONS 被引量:1
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作者 肖进胜 孙乐林 《Acta Mathematica Scientia》 SCIE CSCD 2001年第2期152-158,共7页
A proximal iterative algorithm for the mulitivalue operator equation 0 ∈ T(x) is presented, where T is a maximal monotone operator. It is an improvement of the proximal point algorithm as well know. The convergence o... A proximal iterative algorithm for the mulitivalue operator equation 0 ∈ T(x) is presented, where T is a maximal monotone operator. It is an improvement of the proximal point algorithm as well know. The convergence of the algorithm is discussed and all example is given. 展开更多
关键词 Iterative algorithm maximal monotone operator multivalued operator
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New iterative schemes for strongly relatively nonexpansive mappings and maximal monotone operators
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作者 WEI Li SU Yong-fu ZHOU Hai-yun 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2010年第2期199-208,共10页
In this paper, some new iterative schemes for approximating the common element of the set of fixed points of strongly relatively nonexpansive mappings and the set of zero points of maximal monotone operators in a real... In this paper, some new iterative schemes for approximating the common element of the set of fixed points of strongly relatively nonexpansive mappings and the set of zero points of maximal monotone operators in a real uniformly smooth and uniformly convex Banach space are proposed. Some weak convergence theorems are obtained, which extend and complement some previous work. 展开更多
关键词 Strongly relatively nonexpansive mapping maximal monotone operator zero point fixed point weak convergence.
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MODIFIED APPROXIMATE PROXIMAL POINT ALGORITHMS FOR FINDING ROOTS OF MAXIMAL MONOTONE OPERATORS
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作者 曾六川 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2004年第3期293-301,共9页
In order to find roots of maximal monotone operators, this paper introduces and studies the modified approximate proximal point algorithm with an error sequence {e k} such that || ek || \leqslant hk || xk - [(x)\tilde... In order to find roots of maximal monotone operators, this paper introduces and studies the modified approximate proximal point algorithm with an error sequence {e k} such that || ek || \leqslant hk || xk - [(x)\tilde]k ||\left\| { e^k } \right\| \leqslant \eta _k \left\| { x^k - \tilde x^k } \right\| with ?k = 0¥ ( hk - 1 ) < + ¥\sum\limits_{k = 0}^\infty {\left( {\eta _k - 1} \right)} and infk \geqslant 0 hk = m\geqslant 1\mathop {\inf }\limits_{k \geqslant 0} \eta _k = \mu \geqslant 1 . Here, the restrictions on {η k} are very different from the ones on {η k}, given by He et al (Science in China Ser. A, 2002, 32 (11): 1026–1032.) that supk \geqslant 0 hk = v < 1\mathop {\sup }\limits_{k \geqslant 0} \eta _k = v . Moreover, the characteristic conditions of the convergence of the modified approximate proximal point algorithm are presented by virtue of the new technique very different from the ones given by He et al. 展开更多
关键词 modified approximate proximal point algorithm maximal monotone operator CONVERGENCE
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RESEARCH ON THE EXISTENCE OF SOLUTION OF EQUATION INVOLVING p-LAPLACIAN OPERATOR 被引量:2
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作者 魏利 周海云 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2006年第2期191-202,共12页
By using the perturbation theories on sums of ranges for nonlinear accretive mappings of Calvert and Gupta (1978),the abstract result on the existence of a solution u ∈ L^p (Ω) to nonlinear equations involving p... By using the perturbation theories on sums of ranges for nonlinear accretive mappings of Calvert and Gupta (1978),the abstract result on the existence of a solution u ∈ L^p (Ω) to nonlinear equations involving p-Laplacian operator △p, where 2N/N+1〈p〈+∞ and N (≥ 1 ) denotes the dimension of R^N,is studied. The equation discussed and the methods shown in the paper are continuation and complement to the corresponding results of Li and Zhen's previous papers. To obtain the result ,some new techniques are used. 展开更多
关键词 maximal monotone operator accretive mapping hemi-continuous mapping p-Laplacian operator.
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Iterative Convergence Theorems for Maximal Monotone Operators and Nonexpansive Mappings and Their Applications
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作者 WEI Li ZHOU Hai Yun 《Journal of Mathematical Research and Exposition》 CSCD 2009年第2期283-292,共10页
In this paper, two iterative schemes for approximating common element of the set of zero points of maximal monotone operators and the set of fixed points of a kind of generalized nonexpansive mappings in a real unifor... In this paper, two iterative schemes for approximating common element of the set of zero points of maximal monotone operators and the set of fixed points of a kind of generalized nonexpansive mappings in a real uniformly smooth and uniformly convex Banach space are proposed. Two strong convergence theorems are obtained and their applications on finding the minimizer of a kind of convex functional are discussed, which extend some previous work. 展开更多
关键词 maximal monotone operator iterative scheme strong convergence zero point fixed point.
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Projection Scheme for Zero Points of Maximal Monotone Operators in Banach Spaces
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作者 魏利 周海云 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2008年第4期994-998,共5页
A new projection scheme with errors for zero points of maximal monotone operators is introduced and is proved to be strongly convergent to zero points of maximal monotone operators in Banach space by using the techniq... A new projection scheme with errors for zero points of maximal monotone operators is introduced and is proved to be strongly convergent to zero points of maximal monotone operators in Banach space by using the techniques of Lyapunov functional and generalized projection operator, etc. 展开更多
关键词 Lyapunov functional generalized projection operator maximal monotone operator.
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Anti-periodic solutions to a class of second-order evolution equations
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作者 张莉娜 薛星美 《Journal of Southeast University(English Edition)》 EI CAS 2003年第4期432-436,共5页
In this paper we discuss the anti-periodic problem for a class of abstractnonlinear second-order evolution equations associated with maximal monotone operators in Hilbertspaces and give some new assumptions on operato... In this paper we discuss the anti-periodic problem for a class of abstractnonlinear second-order evolution equations associated with maximal monotone operators in Hilbertspaces and give some new assumptions on operators. We establish the existence and uniqueness ofanti-periodic solutions, which improve andgeneralize the results that have been obtained. Finally weillustrate the abstract theory by discussing a simple example of an anti-periodic problem fornonlinear partial differential equations. 展开更多
关键词 maximal monotone operator anti-periodic solution poincare inequality second-order evolution equations
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EXISTENCE OF SOLUTIONS OF A FAMILY OF NONLINEAR BOUNDARY VALUE PROBLEMS IN L^2-SPACES 被引量:11
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作者 WeiLi ZhouHaiyun 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2005年第2期175-182,共8页
By using the perturbation results of sums of ranges of accretive mappings of Calvert and Gupta(1978),the abstract results on the existence of solutions of a family of nonlinear boundary value problems in L2(Ω) are st... By using the perturbation results of sums of ranges of accretive mappings of Calvert and Gupta(1978),the abstract results on the existence of solutions of a family of nonlinear boundary value problems in L2(Ω) are studied.The equation discussed in this paper and the methods used here are extension and complement to the corresponding results of Wei Li and He Zhen's previous papers.Especially,some new techniques are used in this paper. 展开更多
关键词 maximal monotone operator accretive mapping hemi-continuous mapping strictly convex space.
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Generalized mixed equilibrium problem in Banach spaces 被引量:7
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作者 张石生 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2009年第9期1105-1112,共8页
This paper uses a hybrid algorithm to find a common element of the set of solutions to a generalized mixed equilibrium problem, the set of solutions to variational inequality problems, and the set of common fixed poin... This paper uses a hybrid algorithm to find a common element of the set of solutions to a generalized mixed equilibrium problem, the set of solutions to variational inequality problems, and the set of common fixed points for a finite family of quasi-C- nonexpansive mappings in a uniformly smooth and strictly convex Banach space. As applications, we utilize our results to study the optimization problem. It shows that our results improve and extend the corresponding results announced by many others recently. 展开更多
关键词 small generalized mixed equilibrium problem variational inequality quasi- Ф-nonexpansive mapping maximal monotone operator monotone mapping
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EXISTENCE AND UNIQUENESS OF NON-TRIVIAL SOLUTION OF PARABOLIC p-LAPLACIAN-LIKE DIFFERENTIAL EQUATION WITH MIXED BOUNDARIES
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作者 魏利 陈蕊 +1 位作者 Ravi P.AGARWAL Patricia YJ WONG 《Acta Mathematica Scientia》 SCIE CSCD 2016年第6期1780-1792,共13页
One parabolic p-Laplacian-like differential equation with mixed boundaries is au/at in the corresponding studies is replaced by a(au/at), studied in this paper, where the item au/at which makes it more general. The... One parabolic p-Laplacian-like differential equation with mixed boundaries is au/at in the corresponding studies is replaced by a(au/at), studied in this paper, where the item au/at which makes it more general. The sufficient condition of the existence and uniqueness of non-trivial solution in L2(O, T; L2 (Ω)) is presented by employing the techniques of splitting the boundary problems into operator equation. Compared to the corresponding work, the restrictions imposed on the equation are weaken and the proof technique is simplified. It can be regarded as the extension and complement of the previous work. 展开更多
关键词 maximal monotone operator Caratheodory'conditions SUBDIFFERENTIAL p-Laplacian-tike equation nontrivial solution
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CONVERGENCE OF INVARIANT MEASURES FOR MULTIVALUED STOCHASTIC DIFFERENTIAL EQUATIONS
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作者 关岳 张华 《Acta Mathematica Scientia》 SCIE CSCD 2016年第2期487-498,共12页
This article is concerned with the weak convergence of invariant measures asso- ciated with multivalued stochastic differential equations in the finite dimensional space.
关键词 Invariant measure multivalued stochastic differential equation maximal monotone operator Yosida approximation
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Existence and Uniqueness of Renormalized Solution of Nonlinear Degenerated Elliptic Problems
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作者 Youssef Akdim Chakir Allalou 《Analysis in Theory and Applications》 2014年第3期318-343,共26页
In this paper, We study a general class of nonlinear degenerated elliptic problems associated with the differential inclusion β(u)-div(α(x, Du)+F(u)) ∈ f in fΩ, where f ∈ L1 (Ω). A vector field a(.,.... In this paper, We study a general class of nonlinear degenerated elliptic problems associated with the differential inclusion β(u)-div(α(x, Du)+F(u)) ∈ f in fΩ, where f ∈ L1 (Ω). A vector field a(.,.) is a Carath6odory function. Using truncation techniques and the generalized monotonicity method in the functional spaces we prove the existence of renormalized solutions for general L1-data. Under an additional strict monotonicity assumption uniqueness of the renormalized solution is established. 展开更多
关键词 Weighted Sobolev spaces Hardy inequality TRUNCATIONS maximal monotone graphe degenerated elliptic operators.
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MULTIVALUED STOCHASTIC MCKEAN-VLASOV EQUATION
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作者 池红梅 《Acta Mathematica Scientia》 SCIE CSCD 2014年第6期1731-1740,共10页
In this work, under global Lipschitz conditions, we prove the existence and uniqueness of strong solutions for multivalued stochastic McK ean-Vlasov equation. Moreover, under continuous and linear growth assumptions, ... In this work, under global Lipschitz conditions, we prove the existence and uniqueness of strong solutions for multivalued stochastic McK ean-Vlasov equation. Moreover, under continuous and linear growth assumptions, we also obtain the existence of weak solutions. 展开更多
关键词 multivalued SDE McK ean-Vlasov system maximal monotone operator
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THE EXISTENCE OF SOLUTIONS OF NONLINEAR BOUNDARY VALUE PROBLEMS INVOLVING THE p-LAPLACIAN OPERATOR IN L^s-SPACES 被引量:17
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作者 WEI Li (School of Mathematics and Statistics, Hebei University of Economics and Business, Shijiazhuang 050061, China Institute of Applied Mathematics and Mechanics, Ordnance Engineering College, Shijiazhuang 050003, China. ZHOU Haiyun (Institute of Applied Mathematics and Mechanics, Ordnance Engineering College, Shijiazhuang 050003, China Institute of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050016, China. 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2005年第4期511-521,共11页
By using the perturbation theories on sums of ranges of nonlinear accretive mappings of Calvert and Gupta, we study the abstract results on the existence of a solution u ∈ L^s (Ω) of nonlinear boundary value probl... By using the perturbation theories on sums of ranges of nonlinear accretive mappings of Calvert and Gupta, we study the abstract results on the existence of a solution u ∈ L^s (Ω) of nonlinear boundary value problems involving the p-Laplacian operator, where 2≤ s〈+∞, and 2N/N+1 〈 p ≤ 2 for N(≥ 1) which denotes the dimension of R^N. To obtain the result, some new techniques are used in this paper. The equation discussed in this paper and our methods here are extension and complement to the corresponding results of L. Wei and Z. He. 展开更多
关键词 maximal monotone operator accretive mapping hemi-continuous mapping p-Laplacian operator nonlinear boundary value problem.
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Existence of Solutions to Nonlinear Neumann Boundary Value Problems with p-Laplacian Operator and Iterative Construction 被引量:5
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作者 Li Wei Hai-yun Zhou Ravi P. Agarwal 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2011年第3期463-470,共8页
By using some results of pseudo-monotone operator, we discuss the existence and uniqueness of the solution of one kind nonlinear Neumann boundary value problems involving the p-Laplacian operator. We also construct an... By using some results of pseudo-monotone operator, we discuss the existence and uniqueness of the solution of one kind nonlinear Neumann boundary value problems involving the p-Laplacian operator. We also construct an iterative scheme converging strongly to this solution. 展开更多
关键词 maximal monotone operator pseudo-monotone operator p-Laplacian operator iterative scheme
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Regularization Inertial Proximal Point Algorithm for Common Solutions of a Finite Family of Inverse-strongly Monotone Equations
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作者 Nguyen BUONG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2010年第3期587-594,共8页
The aim of the paper is to propose an iterative regularization method of proximal point type for finding a common solution for a finite family of inverse-strongly monotone equations in Hilbert spaces.
关键词 maximal monotone operators hemicontinuous REGULARIZATION
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Monotone CQ Algorithm of Fixed Points for Weak Relatively Nonexpansive Mappings and Applications
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作者 苏永福 高俊宇 周海云 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2008年第4期957-967,共11页
Matsushita, Takahashi[4] proved a strong convergence theorem for relatively nonex- pansive mappings in a Banach space by using the hybrid method (CQ method) in mathematical programming. The purpose of this paper is to... Matsushita, Takahashi[4] proved a strong convergence theorem for relatively nonex- pansive mappings in a Banach space by using the hybrid method (CQ method) in mathematical programming. The purpose of this paper is to modify the hybrid method of Matsushita, Taka- hashi by monotone CQ method, and to prove strong convergence theorems for weak relatively nonexpansive mappings and maximal monotone operators in Banach spaces. The convergence rate of monotone CQ method is faster than the hybrid method of Matsushi... 展开更多
关键词 weak relatively nonexpansive mapping generalized projection asymptotic fixed point monotone CQ method maximal monotone operator.
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Existence of Solutions for Nonlinear Neumann Boundary Value Problems 被引量:6
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作者 Li WEI Hai Yun ZHOU Ravi P. AGARWAL 《Journal of Mathematical Research and Exposition》 CSCD 2010年第1期99-109,共11页
Using perturbation theories on sums of ranges of nonlinear accretive mappings of Calvert and Gupta, we present the abstract results on the existence of solutions of one kind nonlinear Neumann boundary value problems r... Using perturbation theories on sums of ranges of nonlinear accretive mappings of Calvert and Gupta, we present the abstract results on the existence of solutions of one kind nonlinear Neumann boundary value problems related to p-Laplacian operator. The equation discussed in this paper and the method used here extend and complement some of the previous work. 展开更多
关键词 maximal monotone operator accretive mapping hemi-continuous mapping.
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